What are the products of combustion in simple terms?

The products of combustion primarily include heat and smoke, which are the main outcomes of the combustion process. When a combustible material, such as wood or gasoline, burns, it reacts with oxygen, producing heat as a significant energy release. This heat not only contributes to the temperature increase in the surrounding area but also helps sustain the combustion process further.

Smoke, on the other hand, consists of unburnt particles, gases, and vapors resulting from the incomplete combustion of the material. It can include various harmful substances, which can pose health hazards and affect air quality. The generation of smoke is often a key indicator of combustion occurring, especially in scenarios where there is insufficient ventilation or where the material does not fully ignite.

While other options like flames and gases, heat and water, and light and sound may be associated with combustion, they do not encapsulate the main products of combustion in simple terms. Flames represent the visible aspect of combustion, gases can be a byproduct depending on the material burned, and light and sound are secondary effects rather than direct products of combustion.